<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
	</head>
	<body>
		<script type="text/javascript">
			var num1=  new Number(111);
			console.log(num1);
			
			var num2 = Number("111");
			console.log(num2);
			
			var aaa = new Strings(222);
			console.log(aaa);
			
			var bbb = Strings("333");
			console.log(bbb);
			function Strings(num){
				this["{[[PrimitiveValue]]"] = num;
				return num/1;
			}
		</script>
	</body>
</html>
